Jakob Botsch Nielsen e2cc5ae419 Correctly remove off mesh links to other layers
External links representing off mesh connections between layers in the
same tile location would not be correctly removed. These links had
side = 0xff which were skipped during tile removal under the assumption
that these links were internal.

Also correct some comments in the same place.

Fix #113
2015-12-29 17:51:15 +01:00
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